package org.bouncycastle.asn1.pkcs;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

public class EncryptionScheme extends AlgorithmIdentifier {
    public EncryptionScheme(DERObjectIdentifier objectId,
            DEREncodable parameters) {
        super(objectId, parameters);
    }

    EncryptionScheme(ASN1Sequence seq) {
        this((DERObjectIdentifier) seq.getObjectAt(0), seq.getObjectAt(1));
    }

    public static final AlgorithmIdentifier getInstance(Object obj) {
        if (obj instanceof EncryptionScheme) {
            return (EncryptionScheme) obj;
        } else if (obj instanceof ASN1Sequence) {
            return new EncryptionScheme((ASN1Sequence) obj);
        }

        throw new IllegalArgumentException("unknown object in factory: "
                + obj.getClass().getName());
    }

    public DERObject getObject() {
        return (DERObject) getParameters();
    }

    @SuppressWarnings("deprecation")
    public DERObject getDERObject() {
        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(getObjectId());
        v.add(getParameters());

        return new DERSequence(v);
    }
}
